cub cadet 3186

[JTKub]

Ron, great pics and info! I just can't imagine what would cause this type of (what appears to be) shock damage to these metal parts. Bad metallurgy? PRV not lifting as needed? Misalignment somehow? Interesting stuff. I'd hate to be on the receiving end. I feel for the owners. You buy a premium machine and whadda you get.

Joel

 

[nolan1]

I ordered the charge pump today. Talked to a mechanic at the JD dealer that handles the Cubs & showed him the gear. He said he has seen the same thing happen and changed several of them. He couldn't really say why that happens. Hopefully, the shaft is not damaged too much. Owner agreed to trying the charge pump first before going the next step, which I really don't want to do, changing the shaft.

I got mine torn apart this weekend that gear is broken in mine as well! I am going to order a new one today hopefully that is all that is wrong! Thank you all for the Help and suggestions.

 

[Molerj]

I got the charge pump put on Saturday. I had trouble getting it to pick up oil. Made several phone calls & got different opinions on if it needed primed or not. Tried a few things & still couldn't get it to pick up. Took it out one more time. Inspected o rings on the pick up tube & the o rings on the charge pump. Didn't see anything wrong anywhere. Put it together & this time it worked. Don't have any idea why it didn't work the first two times I put it in. Glad it works now. One other thing to note; the gyrotor gear does not fit in the ring like I show in the picture and there is not a piece missing. I should have taken a picture of the new gear. Nolan, are you sure you got the wrong part?

 

[nolan1]

I hope I am wrong but it dosnt look like my broken one-although that was missing chunks. This one only has 6 teeth and the assembly has 7 is that correct? I can't find a clear picture. I have added a picture. Thank you.

 

[VinceSMTA]

Looks like all of the rotor assemblies that I have put on. Just make sure it gets put on facing the correct way.

 

[nolan1]

Thanks Vince you were right, I got it on an fired it up-works great again! My appologies to Cub Cadet.

 

[Molerj]

Glad it worked out for you. That rotor sure looks odd in the ring, doesn't it? I would have never thought that it fit in the ring the way it does if I didn't buy a complete pump and see it myself. I see where Vince said "make sure it is facing the correct way". I thought the one I changed looked the same on both sides.

 

[quickrch]

There is a key on the input shaft of the pump. Even thou the driveshaft is turning if the key is sheared the pump shaft may not be. I would pull the driveshaft and input shaft adapter to check the key.
I uploaded the 3000 series service manual here Cub_Cadet_3000_Series_Service_Repair_Manual.pdf

There is a section in it on replacing the adapter with a new style one that doesn't use the key just Loctite to hold it from spinning on the shaft.

thank you for me too. Same issue.